John Firth vs. Bill Russell — Career Comparison

Looking at the career totals, John Firth and Bill Russell are fairly close on the surface numbers. Bill Russell posted stronger numbers in ERA (5.14 vs 8) and WHIP (1.429 vs 2.111). John Firth had the advantage in home runs allowed (0 per nine innings vs 1.29). By the career numbers, Bill Russell had the better of this comparison — though ERA and WHIP alone don't account for era, park factors, or the defenses each pitcher worked behind.